Question

answer this physics question​

Answer 1

speed of light in the diamond is equal to 1.25×10^8

Answer 2

Refractive index is ratio of speed of light in air or vacuumto speed of light in given medium.

Hence,

2.42 = 3 x 10^8 / x

Solving for x:

Speed of light on diamond = 1.23 × 10^8